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Articles of Significant Interest Selected from This Issue by the Editors

机译：由编辑选出此问题的重大兴趣的文章

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Thauera aminoaromatica MZ1T was previously isolated from an industrial wastewater treatment plant experiencing a severe episode of viscous bulking. In pure culture, the bacteria flocculate and produce large quantities of exopolysaccharide (EPS). Prombutara and Allen (p. 16461652) performed whole-genome sequencing of chemically mutated floc-deficient isolates of MZ1T and identified a putative EPS deacetylase gene ( tmz1t_3249 ) that complemented the mutation when supplied in trans . The findings suggest that modification of the exopolysaccharide may be sufficient to induce flocculation and drive episodes of viscous bulking by this organism and may reveal a new mechanism to address wastewater treatment plant upsets.Improved quantitative risk assessments for foodborne botulism hazards require better information on the concentration of Clostridium botulinum spores in raw food materials. Barker et al. (p. 16751685) have categorized raw food materials into homogeneous groups (e.g., meat, fish, or plant material, etc.) and constructed probabilistic models for spore concentrations by combining information from a literature survey of spore loads, from positive-control experiments that establish a detection limit, and from dedicated microbiological tests for real food materials. The posterior belief concerning spore loads centers on a concentration range of from 1 to 10 spores kg~(1).
机译：Thauera氨基甲氧基质AMZ1T先前是从经历严重的粘性膨胀的剧集的工业废水处理厂隔离。在纯培养中，细菌絮凝并产生大量的外偶（EPS）。 Prombutara和Allen（第16461652页）对MZ1T的化学突变的絮凝物分离株进行了全基因组测序，并鉴定了辅导EPS脱乙酰酶基因（TMZ1T_3249），其在转换时补充突变。结果表明，外偶糖的修饰可能足以诱导这种有机体的絮凝和驱动粘性膨胀的发作，并且可能揭示一种解决废水处理厂的新机制。食物肉类主义危害的预期定量风险评估需要更好的浓度信息在原料食品材料中的梭菌骨孢菌孢子。 Barker等人。 （p.16751685）将原料食品的原料群（例如，肉，鱼类或植物材料等）分为均质组（例如肉类，鱼类或植物材料等），并通过组合来自孢子载荷的文献调查的信息来构建孢子浓度的概率模型，从阳性对照实验中这建立了检测极限，以及用于真正食品的专用微生物测试。关于孢子荷载中心的后部信仰在1至10孢子kg〜（1）的浓度范围内。

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